The main types and functions of toolpaths in UG CNC programming
Today I will share with you the main types and functions of toolpaths in UG programming (important content)
Before UG processing, it is necessary to perform UG NC assistant analysis on the processed parts to determine the corners, fillets, draft angles and milling depth of the processed parts. So as to better select machining parameters such as tools.
Whether UG is two-dimensional or surface processing, solid modeling must be carried out first, and the solid surface to be processed must be selected through the entity. And Mastercam 2D processing does not require solid modeling, while surface processing requires solid modeling.
Two-dimensional processing
1: Planar mill is used for rough machining the plane and side wall of parts.
2: Manual face milling (FACE_MILLING_MANUAL) is used to finish machining the part plane. In this mode, you need to specify the cutting mode for multiple machining areas in the part.
3: Face milling area (FACE_MILLING_AREA) is also used for finishing the part plane.
4: Planar profile milling (PLANAR_PROFILE) is used for finishing side wall (profile processing).
Check boundary: interference boundary. Trim the boundary: do not process the boundary. Part boundary: processing boundary.
3D machining
1: Cavity milling is used for rough toolpaths. Most of the cavity milling toolpaths are used for roughing. The main function is to remove most of the margin on the mold, so as long as the tool can reach the area, the tool path will be generated.
2: Cavity milling is used for secondary roughing toolpath
In order to improve processing efficiency, tools with larger diameters are used when the mold is roughed. Therefore, when the structure of the mold cavity is complex, there is still a lot of margin after the roughing is completed, and a smaller tool is required at this time Carry out a second rough opening to remove the margin in the narrow place.
3: Deep machining contour (contour contour machining)
Deep machining contour machining is mainly used for semi-finishing or finishing of steep areas in the mold. Its tool path is attached to the outer surface of the steep area, and the height of each layer of tool path is equal.
4: Plane processing toolpath
The plane machining toolpath is mainly used for the machining of the plane in the mold, and the toolpath has a simple shape and high efficiency.
5: Area contour toolpath
The area contour toolpath is mainly used for semi-finishing or finishing of smooth curved surfaces in the mold. The shape of the toolpath follows the shape of the curved surface, and the spatial distance of the toolpath on the curved surface is kept equal.
6; clear root drive
The root cleaning drive is mainly used to remove the margin on the concave fillet of the workpiece. When cleaning the corner, use a small ball knife instead of a bull nose knife or flat bottom knife, because it is difficult to obtain an ideal tool path.
Multi-axis machining (increased rotation axis)
The more widely used multi-axis machining includes variable-axis surface contour milling (VARIABLE_CONTOUR) and deep-processing five-axis machining (ZLEVEL_5AXIS) variable-axis surface contour milling: the most used driving methods are surface and streamline. The curved surface is used to select the curved surface to be processed, and the streamline is used when the tool path path is to be changed, but the streamline must be U and V-shaped, which is a mesh curve. In the selection of the tool axis method, the drive body perpendicular to the part (geometric body) and the side edge drive body is more used. The side edge drive body is often used to finish the contour or wall with a draft angle.